Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
thieu anh » thien anh, chieu xanh, thien danh
trung ap » trung cap, trung lap, trung tam
dan toan » van toan, dan than, manh toan
tap toan » tap quan, bai toan
tap doan » tap quan
ap dung » xay dung, van dung

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu anh - thanh trung ap dung trong ((dan toan) OR (((tap toan) OR (tap doan)))) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu anh - thanh trung ap dung trong ((dan toan) or (((tap toan) OR (tap doan)))) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu anh - thanh trung ap dung trong ((dan toan) or (((tap toan) OR (tap doan)))) cau*.